Question

In which of the following cases does a car have a negative velocity and a positive acceleration? A car that is traveling in the:

a. +x direction decreasing in speed.
b. -x direction at a constant 20 m/s.
c. -x direction decreasing in speed.
d. +x direction increasing in speed.
e. -x direction increasing in speed.

Answer 1

option C

Step-by-step explanation:

The correct answer is option C.

For negative velocity

Negative velocity is when the velocity of the object in a negative direction.

so, for the velocity of the car to be negative, it should be in -x-direction.

For positive acceleration

Positive acceleration is the change of the velocity of the object with respect to time in a positive direction

but when the velocity of the object is in negative direction the slowing down of the vehicle will give positive acceleration.

hence, the correct answer is an option -x-direction decreasing in speed.